Brother 681B-UG User Manual - Page 17

Browse online or download pdf User Manual for Sewing Machine Brother 681B-UG. Brother 681B-UG 39 pages.

Print Page

THREAD TENSIONS

It is important that tension of upper and lower threads be equal to prevent puckering of

material or other problems.

It is recommended that a test sample be made before starting to sew.

To regulate upper thread tension, merely

turn thread tension dial with your thumb

after lowering the presser foot.

THE HIGHER THE NUMBER, THE

TIGHTER THE TENSION.

To increase tension: Turn dial to right to

To decrease tension: Turn dial to left to

NOTE: The zigzag stitch requires less upper

tension than the straight stitch.

Although lower thread tension has already

been adjusted at the factory, when sewing

very thin or heavy materials it may have to

be readjusted.

To regulate the lower thread tension, turn

small screw on the tension, spring of the

bobbin case with the small screw driver.

To increase tension: Turn the small screw

To decrease tension: Turn

-15-

larger number.

smaller number.

clockwise

very

slightly.

the

screw

counterclockwise

very slightly.